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Finding the Fourth Proportional to 66,205.05, 99,350.10 and 36,644.10

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Solution

The fourth proportional to 66,205.05, 99,350.10 and 36,644.10 is: 54,989.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,205.05 : 99,350.10 = 36,644.10 : x
  2. Step 2: Convert to fraction form
    66,205.05/99,350.10 = 36,644.10/x
  3. Step 3: Cross multiply
    66,205.05x = 99,350.10 × 36,644.10
  4. Step 4: Simplify right side
    66,205.05x = 3,640,594,999.41
  5. Step 5: Solve for x
    x = 3,640,594,999.41/66,205.05
  6. Step 6: Final answer
    x = 54,989.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.